All data are in degrees Fahrenheit

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Water temperature in Fukuoka

Detailed information about the current water temperature in Fukuoka. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Fukuoka now

85.0

°F

September 18, 19:29

Trend:

decreasing

Yesterday:

85.7°F

Tomorrow:

84.6°F

Sunrise:

06:03

Sunset:

18:22

Day Length:

12 h. 19 min.

Fukuoka in September

Minimum:

56.7°F

Average:

58.7°F

Maximum:

61.0°F

Sea water temperature in Fukuoka today

As of now, in Fukuoka, the water temperature is 85.0°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 6.2°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 84.7°F on 2024, while the historical minimum was 74.4°F on 2015.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 83.8°F, the minimum temperature may reach 82.9°F, and the maximum might stay at 84.6°F.

Daily water temperature in Fukuoka

Date Current Year

actual* / forecast**

last year 10 years average
Sep 4 85.4°F 81.5°F 80.9°F
Sep 5 84.7°F 81.3°F 80.8°F
Sep 6 84.0°F 82.1°F 80.7°F
Sep 7 85.7°F 82.3°F 80.4°F
Sep 8 85.5°F 83.7°F 80.3°F
Sep 9 85.3°F 83.4°F 80.1°F
Sep 10 84.7°F 83.9°F 80.3°F
Sep 11 84.4°F 84.0°F 80.3°F
Sep 12 84.0°F 83.8°F 80.4°F
Sep 13 83.8°F 84.6°F 80.3°F
Sep 14 83.4°F 85.4°F 80.2°F
Sep 15 83.0°F 85.0°F 79.8°F
Sep 16 83.7°F 84.5°F 79.7°F
Sep 17 85.7°F 83.6°F 79.7°F
Sep 18 85.0°F 84.7°F 78.7°F
Sep 19 84.6°F 84.7°F 78.4°F
Sep 20 84.4°F 84.6°F 78.2°F
Sep 21 84.1°F 83.7°F 77.9°F
Sep 22 83.8°F 82.9°F 77.6°F
Sep 23 83.4°F 80.9°F 77.2°F
Sep 24 83.1°F 80.2°F 76.9°F
Sep 25 82.9°F 79.6°F 76.6°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Fukuoka by month

In Fukuoka, the months July through September offer comfortable swimming conditions, which amounts to 109 swimming days.
The warmest water in Fukuoka was recorded on August 4, 2024, reaching a 88.2°F. While the coldest temperature occurred on March 10, 2025, dipping to 51.7°F. The average readings by season are 58.5°F in Winter, 60.1°F in Spring, 77.5°F in Summer, and 73.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kitakyushu 85.2°F 30mi
Shimonoseki 85.5°F 39mi
Kumamoto 85.2°F 57mi
Nagasaki 84.8°F 66mi

* current water temperature in this city

** straight line distance from Fukuoka